Topic summary
Union Pacific 6936
Union Pacific 6936 is an EMD DDA40Xlocomotive built for the Union Pacific Railroad (UP). Previously a part of UP's heritage fleet, 6936 was for several decades the last remaining operational "Centennial" type, and thus the largest operational diesel-electric locomotive in the world. It is now owned by the Railroading Heritage of Midwest America in Silvis, Illinois, which returned the locomotive to operation.